Subtract 49/10 from 4/42
1st number: 4/42, 2nd number: 4 9/10
4/42 - 49/10 is -1009/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
49/10 = 49 × 21/10 × 21 = 1029/210 - Subtract the two like fractions:
20/210 - 1029/210 = 20 - 1029/210 = -1009/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-49/10 4/42-98/10 4/84-49/10 4/42-49/20 12/42-49/10 4/42-49/30 20/42-49/10 4/42-49/50 28/42-49/10 4/42-49/70